CBSE - Class 12 - Biology - NCERT Solutions

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NCERT Solutions for Class 12 Biology

Download NCERT Solutions for CBSE Class 12 Biology Reproduction in Organisms Reproduction, a characteristic feature of all organisms for continuation of species; modes of reproduction - asexual and sexual reproduction; asexual reproduction - binary fission, sporulation, budding, gemmule formation, fragmentation; vegetative propagation in plants.

Download NCERT Solutions for CBSE Class 12 Biology Sexual Reproduction in Flowering Plants Flower structure; development of male and female gametophytes; pollination - types, agencies and examples; outbreeding devices; pollen-pistil interaction; double fertilization; post fertilization events - development of endosperm and embryo, development of seed and formation of fruit; special modes-apomixis, parthenocarpy, polyembryony; Significance of seed dispersal and fruit formation.

Download NCERT Solutions for CBSE Class 12 Biology Human Reproduction Male and female reproductive systems; microscopic anatomy of testis and ovary; gametogenesis - spermatogenesis and oogenesis; menstrual cycle; fertilisation, embryo development upto blastocyst formation, implantation; pregnancy and placenta formation (elementary idea); parturition (elementary idea); lactation (elementary idea).

Download NCERT Solutions for CBSE Class 12 Biology Reproductive Health Need for reproductive health and prevention of Sexually Transmitted Diseases (STDs); birth control - need and methods, contraception and medical termination of pregnancy (MTP); amniocentesis; infertility and assisted reproductive technologies - IVF, ZIFT, GIFT (elementary idea for general awareness).

Download NCERT Solutions for CBSE Class 12 Biology Principles of Inheritance and Variation Heredity and variation: Mendelian inheritance; deviations from Mendelism - incomplete dominance, co-dominance, multiple alleles and inheritance of blood groups, pleiotropy; elementary idea of polygenic inheritance; chromosome theory of inheritance; chromosomes and genes; Sex determination - in humans, birds and honey bee; linkage and crossing over; sex linked inheritance - haemophilia, colour blindness; Mendelian disorders in humans - thalassemia; chromosomal disorders in humans; Down's syndrome, Turner's and Klinefelter's syndromes.

Download NCERT Solutions for CBSE Class 12 Biology Molecular Basis of Inheritance Search for genetic material and DNA as genetic material; Structure of DNA and RNA; DNA packaging; DNA replication; Central dogma; transcription, genetic code, translation; gene expression and regulation - lac operon; genome and human and rice genome projects; DNA fingerprinting.

Download NCERT Solutions for CBSE Class 12 Biology Evolution Origin of life; biological evolution and evidences for biological evolution (paleontology, comparative anatomy, embryology and molecular evidences); Darwin's contribution, modern synthetic theory of evolution; mechanism of evolution - variation (mutation and recombination) and natural selection with examples, types of natural selection; Gene flow and genetic drift; Hardy - Weinberg's principle; adaptive radiation; human evolution.

Download NCERT Solutions for CBSE Class 12 Biology Human Health and Disease Pathogens; parasites causing human diseases (malaria, dengue, chickengunia, filariasis, ascariasis, typhoid, pneumonia, common cold, amoebiasis, ring worm) and their control; Basic concepts of immunology - vaccines; cancer, HIV and AIDS; Adolescence - drug and alcohol abuse.

Download NCERT Solutions for CBSE Class 12 Biology Strategies for Enhancement in Food Production Improvement in food production: Plant breeding, tissue culture, single cell protein, Biofortification, Apiculture and Animal husbandry.

Download NCERT Solutions for CBSE Class 12 Biology Microbes in Human Welfare In household food processing, industrial production, sewage treatment, energy generation and microbes as biocontrol agents and biofertilizers. Antibiotics; production and judicious use.

Download NCERT Solutions for CBSE Class 12 Biology Biotechnology Principles and Processes CBSE Class 12 biology subject Genetic Engineering (Recombinant DNA Technology).Genetic Engineering (Recombinant DNA Technology).

Download NCERT Solutions for CBSE Class 12 Biology Biotechnology and its Applications Application of biotechnology in health and agriculture: Human insulin and vaccine production, stem cell technology, gene therapy; genetically modified organisms - Bt crops; transgenic animals; biosafety issues, bio piracy and patents.

Download NCERT Solutions for CBSE Class 12 Biology Organisms and Populations Organisms and environment: Habitat and niche, population and ecological adaptations; population interactions - mutualism, competition, predation, parasitism; population attributes - growth, birth rate and death rate, age distribution.

Download NCERT Solutions for CBSE Class 12 Biology Ecosystem Ecosystems: Patterns, components; productivity and decomposition; energy flow; pyramids of number, biomass, energy; nutrient cycles (carbon and phosphorous); ecological succession; ecological services - carbon fixation, pollination, seed dispersal, oxygen release (in brief).

Download NCERT Solutions for CBSE Class 12 Biology Biodiversity and Conservation Concept of biodiversity; patterns of biodiversity; importance of biodiversity; loss of biodiversity; biodiversity conservation; hotspots, endangered organisms, extinction, Red Data Book, biosphere reserves, national parks, sanctuaries and Ramsar sites.

Download NCERT Solutions for CBSE Class 12 Biology Environmental Issues Air pollution and its control; water pollution and its control; agrochemicals and their effects; solid waste management; radioactive waste management; greenhouse effect and climate change; ozone layer depletion; deforestation; any one case study as success story addressing environmental issue(s).

NCERT solutions for class 12 Biology

NCERT solutions for class 12 Biology

NCERT 12 Biology Text book Solutions

NCERT 12th class Biology book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 12 Biology chapter wise NCERT solution for Biology for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.

NCERT Class 12 Biology Units-wise Solutions

Unit

Title

Marks

VI

Reproduction

14

VII

Genetics and Evolution

18

VIII

Biology and Human Welfare

14

IX

Biotechnology and its Applications

10 

X

Ecology and Environment 

14

 

Total

70

CBSE class 12th Biology have one books.

  • NCERT Biology Book Class 12

Here is the list of topics covered under each chapter of class 12 Biology NCERT text book.

Unit VI. Reproduction

  • Chapter-1: Reproduction in Organisms
  • Chapter-2: Sexual Reproduction in Flowering Plants
  • Chapter-3: Human Reproduction
  • Chapter-4: Reproductive Health

Unit VII. Genetics and Evolution

  • Chapter-5: Principles of Inheritance and Variation
  • Chapter-6: Molecular Basis of Inheritance
  • Chapter-7: Evolution

Unit VIII. Biology and Human Welfare

  • Chapter-8: Human Health and Diseases
  • Chapter-9: Strategies for Enhancement in Food Production
  • Chapter-10: Microbes in Human Welfare

Unit IX. Biotechnology and Its Applications

  • Chapter-11: Biotechnology - Principles and Processes
  • Chapter-12: Biotechnology and its Application

Unit X. Ecology and Environment

  • Chapter-13: Organisms and Populations
  • Chapter-14: Ecosystem
  • Chapter-15: Biodiversity and its Conservation
  • Chapter-16: Environmental Issues

NCERT Solutions for Class 12th Biology

NCERT Solutions Class 12 Biology PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 12 Biology includes text book solutions from both part 1 and part 2. NCERT Solutions for CBSE Class 12 Biology have total 16 chapters. Class 12 Biology ncert Solutions in pdf for free Download are given in this website. Ncert Biology class 12 solutions PDF and Biology ncert class 12 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.

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